I have needed thses for a while and simple kept collecting my students files loosly. Now each one has there own place where I keep a 'hard copy' just in case my computer crashes.
I use these folders to organize and deliver tax returns to clients. The business card holder and layout makes for a very professional appearance. Slight cons are that capacity really seems smaller than 1/2 inch. It is hard to slide in more than about 10 pages per side. The business card slot cuts off a larger than desired portion of the corners which may or may not make a difference depending on your card style. Overall GREAT folder for the price. Similar options are much more expensive. Nice color selection too.
Used them to for students to turn in their work. They have been durable and met the purpose. I would have liked a package with more than one color. Also I found that in bulk they are difficult to handle; they slip right out of my hands. Overall I found them useful.